From: Bjorn Helgaas <helgaas@kernel.org>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Cc: Mark.Rutland@arm.com, devicetree@vger.kernel.org,
Grant.Likely@arm.com, linux-pci@vger.kernel.org,
robh+dt@kernel.org, Robin.Murphy@arm.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 0/2] PCI: Describe external-facing ports in device tree
Date: Thu, 11 Apr 2019 16:18:23 -0500 [thread overview]
Message-ID: <20190411211823.GU256045@google.com> (raw)
In-Reply-To: <20190411124027.9490-1-jean-philippe.brucker@arm.com>
On Thu, Apr 11, 2019 at 01:40:25PM +0100, Jean-Philippe Brucker wrote:
> Since v2 [1] I fixed a possible NULL dereference reported by smatch,
> sorry about that. I dropped all tags for patch 2.
>
> Add an "external-facing" property to PCI ports in device-tree, to help
> identify untrusted devices. The notion of untrusted PCI devices was
> added to the v5.0 kernel to describe devices that should have strict
> IOMMU protection [2], for example devices that are plugged in a
> Thunderbolt port. ACPI systems use the ExternalFacingPort property [3].
> Add an equivalent mechanism to device tree.
>
> [1] https://lore.kernel.org/linux-pci/20190402131548.41949-1-jean-philippe.brucker@arm.com/
> [2] https://lkml.org/lkml/2018/11/26/631
> [3] https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-externally-exposed-pcie-root-ports
>
> Jean-Philippe Brucker (2):
> dt-bindings: Add external-facing PCIe port property
> PCI: OF: Support external-facing property
>
> Documentation/devicetree/bindings/pci/pci.txt | 50 +++++++++++++++++++
> drivers/pci/of.c | 14 ++++--
> 2 files changed, 60 insertions(+), 4 deletions(-)
Applied to pci/enumeration for v5.2, thanks, and thanks for fixing the NULL
pointer issue!
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prev parent reply other threads:[~2019-04-11 21:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 12:40 [PATCH v3 0/2] PCI: Describe external-facing ports in device tree Jean-Philippe Brucker
2019-04-11 12:40 ` [PATCH v3 1/2] dt-bindings: Add external-facing PCIe port property Jean-Philippe Brucker
2019-04-11 12:40 ` [PATCH v3 2/2] PCI: OF: Support external-facing property Jean-Philippe Brucker
2019-04-11 21:18 ` Bjorn Helgaas [this message]
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